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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 18 — Sep. 1, 2008
  • pp: 14248–14254

Optical loss mechanisms in femtosecond laser-written point-by-point fibre Bragg gratings

Mattias L. Åslund, Nemanja Jovanovic, Nathaniel Groothoff, John Canning, Graham D. Marshall, Stuart D. Jackson, Alexander Fuerbach, and Michael J. Withford  »View Author Affiliations

Optics Express, Vol. 16, Issue 18, pp. 14248-14254 (2008)

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Fibre Bragg gratings inscribed with the point-by-point method using a Ti-sapphire femtosecond laser operating at 800 nm are shown to display strong increasing attenuation towards shorter wavelengths with a large and spectrally sharp recovery observed below 400 nm. The origin of this loss is shown to be Mie scattering, and the sharp recovery in the transmission results from wavelength dependent scattering within the numerical aperture of the core. The permanent losses from these Type II gratings have implications for high temperature sensors and fibre lasers.

© 2008 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: July 15, 2008
Revised Manuscript: August 21, 2008
Manuscript Accepted: August 25, 2008
Published: August 27, 2008

Mattias L. Åslund, Nemanja Nemanja, Nathaniel Groothoff, John Canning, Graham D. Marshall, Stuart D. Jackson, Alexander Fuerbach, and Michael J. Withford, "Optical loss mechanisms in femtosecond laser-written point-by-point fibre Bragg gratings," Opt. Express 16, 14248-14254 (2008)

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